Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
CH Demand
Gain access to PCB (use Insulation Mat as required)
ON/OFF switch in ON position
CH temp selector to MAX
DHW temp selector to MIN
ON/OFF switch in ON position
CH temp selector to MAX
DHW temp selector to MIN
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow the fan to run and ignition sequence to commence.
Measure the voltage between the pins with the brown wire and blue wires at connector X14 on the PCB. Voltage should be approximately 240 volts AC.
Note:
Voltage will be present during the ignition sequence. If the burner fails to ignite, voltage will cease, the boiler will go to lockout and will need to be reset.
Measure the voltage between the pins with the brown wire and blue wires at connector X14 on the PCB. Voltage should be approximately 240 volts AC.
Note:
Voltage will be present during the ignition sequence. If the burner fails to ignite, voltage will cease, the boiler will go to lockout and will need to be reset.
Isolate as per TOPs P4
and refit as necessary